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Blast furnace tapping ditch operation and maintenance method and tapping ditch

A blast furnace tapping and tapping trough technology, applied in the blast furnace, blast furnace details, steel manufacturing process, etc., can solve the problem of shortening the amount of iron in the tapping channel and its service life, the inability to effectively utilize the thickness of refractory materials, and increasing the amount of maintenance and repair To achieve effective and full utilization, avoid excessive melting loss, and prolong service life

Active Publication Date: 2022-08-09
MCC BAOSTEEL TECH SERVICE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, when the side wall of the tapping trough has a large melting loss, the refractory material of the tapping trough is generally dismantled and overhauled, resulting in the thickness of the excess refractory material at the lower part of the side wall iron line and the bottom of the tapping trough body cannot be It is effectively used, resulting in waste of refractory materials, increasing the amount of maintenance and repairs, and shortening the amount of iron passing through the tapping channel and its service life

Method used

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  • Blast furnace tapping ditch operation and maintenance method and tapping ditch
  • Blast furnace tapping ditch operation and maintenance method and tapping ditch
  • Blast furnace tapping ditch operation and maintenance method and tapping ditch

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Embodiment Construction

[0046] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0047] Thus, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained...

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Abstract

The present application provides an operation and maintenance method for a blast furnace tap ditch and a tap ditch. The operation and maintenance method of the blast furnace tap ditch includes the following steps: determining the single limit iron flux t of the tap ditch n , n is a natural number greater than or equal to 1; it is detected that the actual iron flux is greater than or equal to the single limit iron flux t n When , it is determined to carry out the n-th residual iron discharge detection on the tapping ditch; the operation and maintenance mode of the tapping ditch is determined according to the results obtained from the n-th residual iron discharge detection. The technical solution of the present application is by setting the single limit iron flux t n Improve the accuracy of judging the detection timing of residual iron discharge, and then repair, dismantle, rebuild and combine the operation and maintenance methods of the tapping ditch according to the results of the n-th residual iron discharge detection. Tapping trench refractory materials are effectively and fully utilized, reducing the loss of refractory materials and prolonging the service life of the tapping trench.

Description

technical field [0001] The present application relates to the field of metallurgical ironmaking technology and equipment, and in particular, to a method for operating and maintaining a tap ditch of a blast furnace and a tap ditch. Background technique [0002] The blast furnace tapping ditch is an indispensable channel for blast furnace tapping. As an important facility in the ironmaking production process, ensuring the safety and reliability of the tapping ditch system is a prerequisite for ensuring the normal smelting of the blast furnace. There are many uncertain factors in the use of the blast furnace tap ditch. The refractory construction of the tap ditch system is mainly based on the actual condition of the slag and iron. , Each tap ditch system needs to be repaired and maintained in turn. [0003] In the tapping trench system, compared with the molten iron below, the slag has a smaller specific gravity and higher temperature, and the refractory material near the liqu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/14C21B5/00C21B7/24
CPCC21B7/14C21B5/00C21B7/24C21B2300/04Y02P10/20
Inventor 王超
Owner MCC BAOSTEEL TECH SERVICE
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